Extension Builders in Merton Park

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (23 reviews)

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Some of our top rated extension builders in Merton Park

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Avista Construction Ltd
No reviews yet
Extension Builder in Merton Park
Extensions and loft conversions, carpentry and joinery, bathrooms and kitchens fitting, decorating and all relating works
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Ecotime design and build Ltd
No reviews yet
Extension Builder in Merton Park
Dear customer. I’m electrical and building contractor with 24 years experience in construction industry. Quality and customer satisfaction is our ultimate goal. Delivering a great service is our mission. We don’t shy away from small medium and large projects. All welcome. Thank you.
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C&C CONSTRUCT LTD
No reviews yet
Extension Builder in Merton Park
Hi, my name is Cipriano from C&C Construct Ltd. I have over 20 years of experience in the construction industry. Although we are new to this platform and do not yet have reviews here, we can provide references from private clients and show examples of completed projects. We carry out all types of construction work, both large and small, always to a high standard. We take pride in delivering quality workmanship, keeping sites clean and tidy, and ensuring every project is as smooth and stress-free as possible. Our team is professional, polite, and committed to customer satisfaction.
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LMG Building Services Ltd
Rating: 5 out of 5
Extension Builder in Merton Park
We are a family run business offering you a personal touch. Work is always completed to a high standard. We are members of the Federation of Master Builders & Our previous customers will be happy to confirm the level of Service, Quality & attention to detail that we provide as standard.
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Latest review:
Conversions - General- 3 Dec 2021
Would 100% recommend Lee. His professionalism and attention to detail was fantastic. Always available for questions outside of working hours (rare for a builder) and an overall nice guy. I'm definitely keeping his number for any future work I do.
Craft of London Ltd
Rating: 5 out of 5
Extension Builder in Merton Park
Craft of London are an established building company, specialising in design and build projects, creating bespoke interiors and homes. Our workmanship is of the best standard in London for either small, medium or grand designs.
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Latest review:
Extensions- 3 Sep 2013
Kel and his team worked on my single storey extension with bifold doors and glass roof. He also did some landscaping in my garden, replacing the fencing and installing a raised patio with cedar battens to the side. Overall I was very pleased with the work Kel did. He is a good communicator and frequently visited the site to keep on top of the work. Kel was happy to discuss requests and was flexible with design changes. The bulk of the work was completed on time with just some minor snags remaining, but the finish is excellent. It's been a long and stressful journey, but it's been easier with the friendly support and professional approach Kel has taken to his job. I'd be happy to recommend Craft of London and provide a reference on request.
MKSummer Ltd
No reviews yet
Extension Builder in Merton Park
We provide Design & Build services. Planning application drawings and structural calculations, project management and construction service. Our builders are all experienced in new build, extension, loft conversion and interior alterations.
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Baatth construction ltd
Rating: 4.9 out of 5
Extension Builder in Merton Park
All buildings work undertaken,extension ,loft conversion, plumbing, electrical, driveways
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Latest review:
Bathroom Fitting- 27 Dec 2021
Overall very Happy with the Job done.
Wasif building services limited
No reviews yet
Extension Builder in Merton Park
We take on extension works, we do all maintenance works, we help clients obtain planning permission And we also do flooring and fencing.
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Particle Construction LTD
No reviews yet
Extension Builder in Merton Park
New to MyBuilder Particle Construction is a full-service construction firm specializing in all aspects of building work, from initial extensions to final finishes. With a focus on delivering high-quality results, we handle projects of varying sizes and complexities, ensuring every detail meets the highest standards. Whether it's expanding existing spaces or completing intricate interior finishes, our team combines expertise, craftsmanship, and attention to detail to deliver exceptional outcomes for every client
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BL Carpentry
Rating: 5 out of 5
Extension Builder in Merton Park
Hello! My and my team are working on all kind of construction projects trough London. We've got 15 years of experience and many happy and returning clients.
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Latest review:
Multiple fitting out works, eg fitted cupboards, kitchen fitting. Top notch. Knowledgeable, fair, prompt. Would enlist his help again.
Reline Roofing
No reviews yet
Extension Builder in Merton Park
New Roofs, Loft conversions, Lead Roofs, Exstentions, Flat Roofs, Out buildings, Guttering, Refurbishments, Repointing, Foam removal, Roof Repairs, Solar Panels, Facias & Soffits, Chimney Repairs, All other types of construction works undertaken, Want to know about your roof just ask! VISIT OUR WEBSITE FOR MORE INFOMATION.
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Good Choice Builders LTD
Rating: 5 out of 5
Extension Builder in Merton Park
We are the building company that specialized in Loft Conversions, Extensions and Refurbishments. By this moment we worked as a subcontractors, now we have all neccessary and feel free to participate to the tenders, prepare the informative and detailed contracts and estimations, management.
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Latest review:
Extensions- 8 Jul 2019
A very efficient builder who did the plans which where passed first time when we needed help he found someone to help very clean and tidy and on time
Remas Construction
Rating: 5 out of 5
Extension Builder in Merton Park
I been in construction field for over 16 years: (Electric, Plumbing, Plasterboard, Painting, Flooring, Carpentry, GlassWork, Kitchen & Bathroom, Extension and much more..) I believe that quality is the result of careful planning and execution. Daily maintenance solutions.. (Urgent & Same day Service). Best price in London, Guarantee 💯 GENERAL CONTRACTOR'S Commercial & Residential Home inspection
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Latest review:
Ahmad did an exceptionally good job. He painted a large number of walls, filled them, gave me a recommendation as to what paint should be used and left everything clean and tidy every day. Highly recommended.
S g conversions ltd
No reviews yet
Extension Builder in Merton Park
Fully qualified in city and guilds and advanced crafts
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Langley Groundwork Ltd
Rating: 5 out of 5
Extension Builder in Merton Park
Welcome to Langley Groundworks Ltd I’m Rich Langley, founder of Langley Groundworks Ltd, and we’re proud to offer a reliable, experienced service in all aspects of groundworks, foundations, drainage, demolition, and site clearance. With years of hands-on expertise and a strong reputation for quality, we ensure every project—big or small—is completed safely, efficiently, and to the highest standards. In addition to our core groundworks services, we also manage full property refurbishments and alterations, offering a complete start-to-finish solution tailored to your needs. Whether you’re preparing a new build site, upgrading existing infrastructure, or transforming a property, Langley Groundworks Ltd brings the right skills, equipment, and attitude to get the job done properly. We’re here to make the process as straightforward and stress-free as possible—reliable, professional, and ready to deliver.
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Latest review:
Groundwork & Foundations- 3 Aug 2025
Richard was incredible- excellent at his craft, very precise and very hard working. He knows his concrete! We couldn’t recommend him enough!
SRK Constructions London Ltd
Rating: 5 out of 5
Extension Builder in Merton Park
We offer a plethora of construction services and are known for excellent k-rendering, electrical fitting, plumbing, and carpet service. We have been in the industry for more than 14 years and our work varying from small to large projects speaks about our experience in the field. We believe in creating with heart and building with the mind. We are trustworthy contractors and always strive to meet the quoted budget. Clients’ satisfaction is the topmost priority of the SRK constructions.
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Latest review:
Bathroom Fitting- 12 Apr 2022
Sandeep was the first builder who I ever met who finished job before time . His team has worked very hard and did job as per our expectations . Before this I used 3 different builders and no one finished job on time . I will recommend him for any building related job .

4.3

Top rated Extension Builders

Our Extension Builders in Merton Park, are rated 4.3 out of 5 based on 23 reviews from customers like you.

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What types of services are offered by local extension builders in Merton Park?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in Merton Park for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in Merton Park who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen Merton Park extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in Merton Park?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Merton Park will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several Merton Park extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Merton Park home extension project is likely to cost.

Find extension builders in Merton Park with MyBuilder

Hiring the right extension builder in Merton Park with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local Merton Park extension builders. Once your job is live, we’ll share it with home extension builders in Merton Park who can express their interest.

Step 2: Compare different extension builders in Merton Park

When you start receiving interest, review profiles of local Merton Park extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire Merton Park extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Merton Park, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

Merton Park extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Merton Park extension builder before hiring?

Before hiring an extension builder in Merton Park or extension building company in Merton Park, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in Merton Park?

An extension builder in Merton Park should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your Merton Park extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in Merton Park?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the Merton Park extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most Merton Park extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in Merton Park

Can an extension builder in Merton Park help with planning permission?

Yes, many extension builders in Merton Park can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in Merton Park handle everything from design to construction?

Many Merton Park extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in Merton Park help with materials and finishes?

Yes, most extension builders in Merton Park can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.